I found myself needing to Sysprep a 2008 Server today in preparing for cloning, I soon discovered that sysprep is no longer on the DVD instead Sysprep is now install by default under.
C:\Windows\System32\sysprep\sysprep.exe
The gui is also streamlined considerably. run sysprep.exe are you are presented with:
Check the “Generalize” checkbox (regenerates system SID), change the Shutdown Options to “Shutdown”, and click OK.